Device for transforming variable motions into uniform motions.



PATENTED DEC. 24, 1907.

H. NIBBUHR. DEVICE FOR-TRANSFORMING VARIABLE MOTIONS INTO UNIFORM MOTIONS.

APPLICATION FILED MAR 19 190'! was "anus UNITED STATES PATENT. oFFroE.

HENRI NIEBUHR, or HANOVER, GERMANY, ASSIGNORTO'SIEMENS & HALSKE AKTIENGESELLSOHAFT, or BERLIN, GERMANY.

DEVICE FOR TRANSFORMING VARIABLE MOTIONS INTO UNIFORM MOTIONS.

Patented'Dec. 24, 1907.

' Application filed March 19.1907. Serial No. 363.275.

To all whom it may concern:

Be it known that I, HENRI NIEBUHR, a;

" motion trans ormer is used which contains a link joint, to one point of which the variable motion to be transformed is imparted. The

. transformer is of such a construction that a second point of the link joint will execute a uniform motion which is a function of the said variable motion.

Myiignew device may be used especially for measuring purposes and can be employed in connection wit trical and speed meters, in the latter case gasand Water-meters, elecby simultaneously registering the time, the speed and the whole space described.

In the accompanying drawing I have illustrated in Figure 1 my invention as employed in connection with a water meter working on the principle of Venturi. Fig. 2 is a modification of the link system shown in Fig. 1.

- In the drawing the transformer which has to transform a variable motion into a uniform motion is composed of a quadraii ular I link joint (1,, a a a and two guides b which latter are so sha ed, that if thevariable motion is imparte to the oint c of the link joint, the opposite-point. of the same 3 will produce a linear motion which is a function of said imparted variable motion. If

"the mathematical function of 'the variable motion is known, the required shape of the I I curved guides b and 6 by which the link points a and f are guided can be exactly calculated.

In the drawing 0 is a water pi e through which the water will flow in the direction of the arrow f. 'c, is a restricted portion in this pipe. g is a tube having two shanks g and g and containing a suitable liquid for instance mercury. The shank g is opening into the restricted portion e of the pipe e.

' Upon the mercury level of the shank g rests a piston h which is rigidly connected to the oint c of the motion transformer by means of the rod '5. A short distance before the retransformer at obeing so transformed, that s the opposite point p of the transformer link joint will produce a uniform motion. ,Both transformers are so constructed that the uniform motion of d is equal toitha't of p,

The uniform motion of the link points (1 and p are transferred by. means of toothed rods 2, and 1', upon the tooth wheel 8 The rod 1', is providedat its upper end withta fork 1' which embraces a small friction This latteris so mounted upon-the be shifted .by the forked rod r, along the axle which is mounted wheel s axle t, that it can bearings t t but the Wheel a cannot be rotated with respect to theaxle t. If t is rotated the tooth wheelu firmly connected to the axle tis also rotated, therebycorrespondingly operating the register u. The wheel 8 by which the friction wheel 8 is rotated,=is constantly rotated by a clock work 1).

The operation of the device shown is as' follows. If any water is flowing through the restriction (2,, a certain suction will be produced in the shank 9 of the tube 9., The fluid contained in the tube which is normally, that is to say, if no water is flowing through the restricted portion 6,, in the zero-position y y in all the tube shanks, will rise in the shank 9 to a certain height, thereby lowering the level in the shank g and the piston h. The ma 'tude of suction and consequently. the owering and risin of the mercury levels depends on the ve ocity of the water flowing throu h the restriction. The variable motion of t e piston h is imparted to the point 0 of the motion transformer and is transformed into a uniform motion of the point d, so that the toothed rod will correspondingly more or less change the location of the friction wheel upon the axle t. This wheel 8 will therefore touch the disk s tooth wheel a actionating the registeringvice u, will correspondingly vary thereby exactly registering the quantity of water,

which has passed the restriction (1,. The second tube is will act in the opposite way. If the water is flowing through the pipe e a pressure will be exerted upon the mercury level in the shank is, this pressure and the alteration of the position of piston l'will depend on a certain mathematical law. The variable motion of Z is transformed by means of the motion transformer into a uniform motion of p which is transferred to the tooth wheel The described device may be simplified in many respects. In certain cases it would be suflicient to employ one motion transformer only. Instead of using a quadrangular link joint such a one having two links only could be used. For instance, in the motion transformer shown, the links a, and a, and the guide b could be spared, by providing for special guides z, and .2 for the link ends 0 and d, as shown in Fig. 2.

Having now described my invention wb at I claim and desire to secure by Letters Patent is:

1. Device for transforming a motion variable according to a mathematical function into a uniform motion and for registering the latter comprisingian element for producing variable motion, an element for registering uniform motion, a transformer consisting of a link movement having one end suitably guided and connected with the element of uniform motion and the other end suitably guided and connected with the element of variable motion and also having an intermediate joint, and means for guiding said intermediate joint in the path corresponding with the change in motion required.

2. Device for transforming a motion variable according to a mathematical function into a uniform motion, and for registering the latter, comprising an element for producing variable motion, an element for registering uniform motion, a transformer consisting of a jointed linkage connecting said elements of uniform and variable motion, means for guiding the end of the link connected to the element of variable motion, means for guiding the end of the link connected to the element for registering uniform motion, and means for guiding the other ends hinged together in a path corresponding with the change in motion required, to transform the variable motion into the uniform motion.

3. Device for transforming a motion variable according to a mathematical function into a uniform motion and for registering the latter, comprising a transformer having) a jointed linkage and a curved guide suita ly shaped to guide the hinged ends of said jointed linkage to cause the variable motion of a point of' one link to be transformed into a uniform motion of a second link; a water meter arra ement working on the Venturi principle an imparting to the said point of the first link the variable motion; and means for registering the uniform motion of the above mentioned second link of the transformer, substantially as described.

4. Device for transforming a motion variable according to a mathematical function into a uniform motion and for registering the latter, comprising a transformer, havi a jointed linkage and a curved guide suit a ily shaped to guide the hinged ends of said jointed linkage to cause the variable motion of a point of one link to be transformed into a uniform motion of a point of a second link; a tube having two shanks and containing a liquid, the alterations in height of one level of said liquid,- caused by the alterations in height of the other liquid level, being-imparted to the first mentioned link of the mo tion transformer; and means for registering the uniform motion of the above mentioned second link of the transformer, substantially as described.

5. Device for transforming a motioxrvariable according to a mathematical function into a uniform motion and for'registerin 1e latter, comprising a motion transformer av; i v a jointed linkage and a curved guide suite ab y shaped to guide the hinged ends of said jointed linkage to cause the variable motion of a point of one link to betransformed into a uniform motion of a second link; a tube having two shanks and containinga 1i uid,

the one shank opening into the restricted ortion of a fluid conduit, so that the level lieight of the liquid level in this shank is influenced by the fluid pressurepresent atsaid restriction; means forimpartin the alterations in height of the other liqui level of the tube, to a point of one link of said transformer, and means for registering the roduced uniform motion of a second ll of said transformer, substantially asdescribed.

6. Device for transforming a motion variable according to a mathematical function into a uniform motion and for registering the latter, comprising two motion transformers each having)a jointed linkage and a curved guide suita ends of said jointed linkage to cause the variable motion of a point of one link to be transformed into a uniform motion of a second link; a tube having two shanks containing a liquid, the one shank opening into..r.a .restricted portion of a fluld conduit; means for impartin the alterations in hei ht of the other liquid evel of the tube, to a ink point of one of both transformers; a second tube having two shanks containing a liquid, the one shank of this tube opening into said fluid conduit before but near said restricted portion; means for imparting the alteration in ly shaped to guide the hinged In Witness whereof, I hereunto subscribe my name this first day of March, A. D. 1907.

HENRI NIEBUHR.

Witnesses P. R. THOMPSON, JAMES M. BOWCOOK. 

